Error::TypeTiny(3pm)           User Contributed Perl Documentation           Error::TypeTiny(3pm)



NAME
       Error::TypeTiny - exceptions for Type::Tiny and friends

SYNOPSIS
          use Data::Dumper;
          use Try::Tiny;
          use Types::Standard qw(Str);

          try {
             Str->assert_valid(undef);
          }
          catch {
             my $exception = shift;
             warn "Encountered Error: $exception";
             warn Dumper($exception->explain)
                if $exception->isa("Error::TypeTiny::Assertion");
          };

STATUS
       This module is covered by the Type-Tiny stability policy.

DESCRIPTION
       When Type::Tiny and its related modules encounter an error, they throw an exception
       object. These exception objects inherit from Error::TypeTiny.

   Constructors
       "new(%attributes)"
           Moose-style constructor function.

       "throw(%attributes)"
           Constructs an exception and passes it to "die".

           Automatically populates "context" and "stack_trace" if appropriate.

   Attributes
       "message"
           The error message.

       "context"
           Hashref containing the package, file and line that generated the error.

       "stack_trace"
           A more complete stack trace. This feature requires Devel::StackTrace; use the
           $StackTrace package variable to switch it on.

   Methods
       "to_string"
           Returns the message, followed by the context if it is set.

   Functions
       "Error::TypeTiny::croak($format, @args)"
           Functional-style shortcut to "throw" method. Takes an "sprintf"-style format string
           and optional arguments to construct the "message".

   Overloading
       ·   Stringification is overloaded to call "to_string".

   Package Variables
       %Error::TypeTiny::CarpInternal
           Serves a similar purpose to %Carp::CarpInternal.

       $Error::TypeTiny::StackTrace
           Boolean to toggle stack trace generation.

       $Error::TypeTiny::LastError
           A reference to the last exception object thrown.

CAVEATS
       Although Error::TypeTiny objects are thrown for errors produced by Type::Tiny, that
       doesn't mean every time you use Type::Tiny you'll get Error::TypeTinys whenever you want.

       For example, if you use a Type::Tiny type constraint in a Moose attribute, Moose will not
       call the constraint's "assert_valid" method (which throws an exception). Instead it will
       call "check" and "get_message" (which do not), and will "confess" an error message of its
       own. (The $LastError package variable may save your bacon.)

BUGS
       Please report any bugs to <http://rt.cpan.org/Dist/Display.html?Queue=Type-Tiny>.

SEE ALSO
       Error::TypeTiny::Assertion, Error::TypeTiny::WrongNumberOfParameters.

       Try::Tiny, Try::Tiny::ByClass.

AUTHOR
       Toby Inkster <tobyink AT cpan.org>.

COPYRIGHT AND LICENCE
       This software is copyright (c) 2013-2014 by Toby Inkster.

       This is free software; you can redistribute it and/or modify it under the same terms as
       the Perl 5 programming language system itself.

DISCLAIMER OF WARRANTIES
       THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
       WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
       PURPOSE.



perl v5.20.0                                2014-09-02                       Error::TypeTiny(3pm)